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Fix size check (change.epcore.170475)

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 Change: 19399
 ServerID: perforce.ravenbrook.com
This commit is contained in:
Pekka Pirinen 1998-04-06 18:55:15 +01:00
parent da4e4bf252
commit 627215a2cb
1 changed files with 5 additions and 6 deletions
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11
mps/src/vmw3.c
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@ -1,6 +1,6 @@
/* impl.c.vmw3: VIRTUAL MEMORY MAPPING FOR WIN32
*
* $HopeName: MMsrc!vmw3.c(trunk.23) $
* $HopeName: MMsrc!vmw3.c(trunk.24) $
* Copyright (C) 1997, 1998 Harlequin Group, all rights reserved
*
* Design: design.mps.vm
@ -55,7 +55,7 @@
#include "mpswin.h"
SRCID(vmw3, "$HopeName: MMsrc!vmw3.c(trunk.23) $");
SRCID(vmw3, "$HopeName: MMsrc!vmw3.c(trunk.24) $");
/* VMStruct -- virtual memory structure */
@ -174,12 +174,11 @@ Res VMCreate(VM *vmReturn, Size size)
GetSystemInfo(&si);
align = (Align)si.dwPageSize;
AVER(SizeIsP2(align)); /* see .assume.sysalign */
size = SizeAlignUp(size, align);
AVER(size != 0);
if((size == 0) || (size > (Size)(DWORD)-1))
return ResRESOURCE;
/* Allocate some store for the space descriptor.
* This is likely to be wasteful see issue.vmnt.waste */
/* Allocate the vm descriptor. This is likely to be wasteful. */
vbase = VirtualAlloc(NULL, SizeAlignUp(sizeof(VMStruct), align),
MEM_COMMIT, PAGE_READWRITE);
if(vbase == NULL)